%0 Journal Article
%T 多孔泡沫金属内气泡动力学行为的格子波尔兹曼方法模拟<br>Numerical study on bubble dynamic behavior in porous media by lattice Boltzmann method
%A 施娟
%A 陈振乾
%A 马强
%J 东南大学学报（自然科学版）
%D 2015
%R 10.3969/j.issn.1001-0505.2015.04.021
%X 为了研究多孔泡沫金属骨架对气泡上升运动的影响,基于多孔泡沫金属的骨架结构,建立了多孔泡沫金属内气泡动力学行为的物理模型,并利用格子Boltzmann方法(LBM)模拟孔隙尺度下气-液两相流动.考虑多孔泡沫金属内流体间以及流固间的相互作用力,采用多组分单松弛的Shan-Chen模型,模拟气泡在泡沫金属孔隙结构内的运动形态.对含有泡沫金属以及不含泡沫金属的计算区域内气液两相流的密度场进行了比较.实验结果表明:泡沫金属骨架的存在改变了两相流流场,同时使气泡上升过程中边界受到挤压,从而改变气泡的上升速度;随着重力场的增大,流体区域内有序排列的泡沫金属结构可以加快气泡上升速度.<br>In order to study the effects of porous metal foams on the bubble rising motion, a physical model of the bubble dynamic behavior in porous metal foams is developed, which takes into account the structure of the metal foam. The lattice Boltzmann method(LBM)is applied to simulate the vapor-liquid two phase flow in the pore scale. The Shan-Chen model with multi-component and single relaxation time is used to track the motion morphology of bubble in the pore structure of the metal foam, considering the interparticle interaction between fluid-fluid and fluid-solid wall. The density distributions of the vapor-liquid two phase flow in the simulation domain with and without metal foam are compared to that without metal foam. The simulation results show that two-phase flow field and the interface of bubble are influenced by the metal foam structure. Therefore, the bubble rising velocity is changed. Meanwhile, the bubble rising velocity increases with the increase of gravity if there is metal foam with ordered array in the fluid
%K 多孔泡沫金属
%K 气泡动力学行为
%K 格子Boltzmann方法&lt
%K br&gt
%K porous metal foam
%K bubble dynamic behavior
%K lattice Boltzmann method
%U http://journal.seu.edu.cn/oa/darticle.aspx?type=view&id=201504021